Frictional draft-rigging.



I y No. 815,023 u 'PATENTE'D MAR. 1,3

' H. T. KRAKAU L L.- A. GONNER, JB.

PRIGTIONAL DRAFT RIGGING.

vAP'PLIMTION FYILBD Mmm.,v 1902;

2 SHEETS-SHEET 2.

. INVENTORS www y,

w NN` 1 15v sp'ectiveviews` of the. Wedges;

Q*- lwith the.desired'i'rictionalresistance. i o' p O u'r invention, also comprises a *leveror `other movableplece adapted'to ycause-release.

U'NTTED STATES HARRY T. KEAKAWOE 'cLEvELAND,- oH'o, AND L'ENDEEL A. CONNEE,v

JR.; OE PITTSBURG, rENNSYLvANIA, Ass'IeNons' 'ro vTEE NATioNAL M ALLEABLE EA'TION or onio.l

y Nasiaoaa.

of Cleve1and,Cuyahogafcounty; Ohio, and? LENDELL A. CQNNER, vJr., of-Bittsburg, Alle- 5 gheny county, p y

a new and useful-Frictional Draft-Rigging, 'of

which the vi'ollowingisa full', clear, and exact` description'7 reference beingv had'to the `accompanying' drawings, forming part of this ro s peciication,'in which-- j Figure 1 is a plan view of our draftriggin'g, partly in longitudinal section. are vertical seotionson'the-lines Il II and vI II III, respectively, Figs. 4 and 5 are yper- Fig. 6 is a Y vertical. longitudinal section "on` the line VI 'V I of'Fig'. y1. f Fig. 7 is a longitudinal section of the spindle or movable releasing-stop 18.r`

. Figs'. -8 and 9 arefrontandfrear' perspective zo views ofthe lever 15.4 FQ- I0 is 4a hoizontal 'I section of the wedges, showing a Inodied clonstructlon ofthe releasing devlce.

'ln the cp'nstruction of irictional draft-gear for railway-cars the important ends to vbe 'sel-1 cured are simplicity of construction, which enables thedraft-rigging lto' be applied with' .out complication and expense, durability suiiicien't towithstand 4thejheavy'v shocks and ,blows togwhich 'it is subjected when inuse,

3o' `and ease of operation 'sufficient' tol allow the' frictional action to take place witlioutsuch preliminary locking action as would prevent thefrictional operation. ,Our invention'ser- 'cures these objects and possesses also other 3 5 advantages-namely, it affords a construction ht, and provides meansfor effectingthe re ease of the frictional parts 'atorf -f Wliich'is li near the en'dof their motion.

- Our invention in its sim le forni-.com rises 4o inf'com'bination -With'the draw-bar, movable friction platesgor bars, .j between which are-` 'Wedges, one of' them beingadapted tobe moved with4 or by the draw-bar, while -the otheris held by a-sutabIestOp, so: that such motion ofl the drawrbar will first' vc au'se the wedgestogex'pandand bear i'rictionally against the friction .-'plates .and will then" cause they latterto move 1n contact'therewith variouswaysby the s show. inthe'draWi-ngs what we -believe to-b v the preferable construction.- n

z-Figs. 2 and 3' gether fby top` and bottoirr 'drawfban the spring 14 will bring the parts vinto the position vshown in roo Figli, and thedraw-bar wi l CASTINGS .ooMrANin or oLEvELAin), oH1'o,A coErou y Emotion/n..DRAFTQHIGGiNGr- Patented' Marsh. 13, 1 9o6.

' of the .wedges from frictionalcontact, to-

'getherwith means for effecting the motion ofv .said lever ator nearthe end of the working movement ofthe frictional devices.. 55 Pennsylvania, have invented Ourv invention is capable of modification in {illedmechamc .but we In theJ- drawings, 2 represents the draw-bar. 6o. f8 3 are Ithe draft-irons, secured to thel timbers and having iixed vstops4 4.

. 5 5 are.v the friction-plates,l which are adaptved to inoveiwith the draw-barbulfingL Thesefriction-plates vare I preferablywconnected to# lates 6", which f may be interlocked withthe'ictionplates, asshown lat 6, and secured thereto by .bolts or rivets.` 'A head or tr'illoiaverfI Svisconneeted tothe friction-plates and is preferably inter-- 7o 'locked therewith at 8.

\ Thedraw-bar'bears against the head 8 in bufling', and the follower Subears against the stops 4in pulling. Bef vtween the frictionplates'55'are the swedges 9'and 10. A.Therear end of the-Wedge 10 is 7'5 formedjintegrally with or bears against a head'or follower 1 1, around whichl th'eyoke 12 f of the draw-bar passes ,l and said Afollower has'a bearing against the rear 'stops 4. The wedge 9 is integral withor bears against a liead or follower4 13, vand a spring orl springs 14are4 interposed between the followers 8 and .13. The wedges are` not coeXtensive, and" the spaces b c at their ends permit'their longitudinal motion.l Then the parts are in the 85 l osition shownin Fig. '1 ifa buiiiiw..force is applied to the draw-bar it will move back the ollower. 8 and friction-plates 5 5 and byy means -of thefspring 14 and follower 13 such motion will be transmitted to the wedge 9, `which will bear against the wedge 10, and-the .latter being held from rearward -inot'ionzby .the stops 4 :the wedges will be expanded be- `tween'the friction-plates -5 5 and w-ill exert a` irictional retarding action upon the latter, which, together with the spring 14,. imparts thedesired yielding resistance to .the draw:-

bar. If a pulling force is now dllplied -to the st react to then actthroughv the 'yokeiZ uponthehreariollower and` bind with the wedge 9, which is held by the spring 14 bearing against the follower 8 and stops 4. The continued forward motion of the draw-bar will move the wedges between the friction-plates 5 and againsttlie spring 14 with the desired frictional action.

- The above description explains our device in its simplest form, comprising merely the friction-plates, two wedges, and a spring, and

We desire to claim the same broadly, Whether.

the spring be placed on the forward end -orv rear end ofthe`wedges,

tain frictionalcontact of the wedges in all conditions of wear and to render the device capable of automatically taking up slack,

which is a matter of great importance, wel not only incline the wedges longitudinally, as shown in plan view in Fig. 1, but we also in` cline or taper them transversely, as shown in Figs. 4 and 5, so that under the action of` gravity they will always. be maintained in contact with each other. For the purpose of preventing-accidental upward creeping of' the Wedges, which would tend to release them lfrom .frictional contact, we incline somewhat the working faces 5 of the friction-plate 5 andcorrespondingly inclinethe outer faceof the wedge 9, as shown in Fig'. 2.

Our invention also provides means for the positive release of the frictionesurfaces of the draft-riggingat or near the end of their mo.

tion, and for this purpose we provide a lever orlike moving part, which at the proper time y is moved against one of the wedges and causes its release frornthe other. Simple forms of applying such device are shown in the drawings. In Figs. 1 to 9 a lever 15 is set in a socket 16 in the wedge 10 or follower 11 and bears against a pivot or fulcrum 17 therein,

lor the fulcrummay be formed on the lever instead of being formed in the socket 16. One end of the lever 15 has a bearing against the wedge 9, and the other end receivesor bears against the rear end of a spindle V18', which preferably'fits within thesocket 19 on the lever and extends to within a short distance 'of the follower 8,'. the space between these two parts being a little less than the def sired length of'trav'el of the parts of the draftri in -The spindle passes longitudinali gg g Y through holes 20 in the wedges, the hole in `the wedge 10 being of larger diameter than the spindleso asto permit the necessary downward gravity action of the latter forthe reach the limit of t purposes above explained. yVlhen the parts eirrear motionrn bufling, the follower yS'engag-es the spindle and movin it lengthwise v.will .turn the lever 15 on its f u crum 17 and will cause the latter to move the wedge 9 forward. This effects the immediate release of frictional contact between the wedges. In like manner in 'pulling when the Our improvement, however., also comprises certain other fea or wedge will sugg'est themselves, an tures of importance. Thus in order to main-v `skilled mechanicwill be able to modify the "members in contact Wit parts reach the limit of their-forward motion the forward end of the spindle will engage the follower -8 and acting through the lever 15 will move the Wedge 9 forward and release it. In Fig. 10 we show a modified construction inwhich the 4spindle 1S is not employed. The lever 15 is pivoted at 17 to the wedge 10. One end bears against the wedge 9, and the other end is adapted to be engaged by one of the friction-plates 5 near the end of the motion of the parts. Other means for 'effecting the positive release of thevwedges through a movable ieee the other parts `of our invention in many ways, since What we claim is 1. A frictional draft-rigging having an external frictionmember and wedges, one of said wedges being restrained by a stop and the other .of'said wedges being ada ted to move with the'draw-bar to effect t e fric-'5l tional engagement of the friction elements;

substantially as described.

2. A frictional draft-rigging havingan external friction memberand wedges, one of the said wedges being-adaptedto be restrained by a stop, the other wedge being adapted to move with the drawfbai, and a spring bearinfr on one of said wedges,l substantially as described.

' -3. In a frictional draft-rigging the combi-- nation with the movable friction members,-

wedges having a longitudinalface adapted to engage said movable friction members, a stop for one of the wedges, and a spring bearing against the other wedge; substantially as described.

4. In a frictional draft-rigging, the combinatioirwith external movable friction members, of wedges having lateral engagement therewith, astop for 'one of the Wedges, a

spring bearing against the other wedve,and a head or follower connected to the frictionplates whereby the frictional engagement of the friction elements is effected; substantially as described. n

5. In a frictional draft-rigging, thecombination of movable friction members, wed es having a downward y and transversely beveled face opposite thereto, a stop for one of the wedges,

a spring bearing against the other wedge, a'

head or follower connected to the` frictionplates, and a sto for said head or follower; substantially as eseribed.

6. A frictional draft-gear comprising, a friction-plate and another frictiona jacent thereto, said friction-plate having its working face inclined to prevent vertical mog tion of the other friction member;'substan tially as described. 7. A. frictional draft-rigging having wedge each other, said IOO IXO

IIS

lain face upon one side, an a motion to cause their reverse motionandlre ing friction members,` an

[Wedge members having transversely;inclined meeting faces to maintainftheir frlctional con- .-tact; substantially as described.

, 8. A frictional draft-rigging havin Wedge adapted to be'engaged at 'or near the. limit. of-

lease; substantially as .described i engaged at or near the' limitof motlonandto ing friction members', 'a Inovlng 9. A national dma-rigging twingwedg-f art .carried with one of said members'and-a aptedtobe cause the reverse motion and release ofthe Wedges; substantially as described. i' 10.- Africtional draftligging having Weniging friction members,a moving art carried With one ofsaid members and a apted to be engaged'. at or near the limitof motlon and 'to cause the reverse motion and releasey of the l of motion to cau e theirreverse motionland'- Wedges; and a spindle-adapted tlo be Iengaged gend to w'- tuate saidmovable piece substantiallyas dej by a follower in said draft-riggln 11.v A frictional draft-rigging having wedg ing friction members, and amovable piece'.

adapted to be engaged by .one'of the' movingf partsy o f the draft-rigging at ornear the limit release; substantially as describe 12'. A frictionaldraft-rigginghaving vvedging friction members, and a'lever adapted to f and a spindle' extendln .ing friction members, and 5 oneof s ald members and'bearmg on theother, andmeans for actuating sald lever at or near be engaged at or near the. limit of motionfito lcause their reverse motionk and release 5. sub# stantially as described. 'Y'

ing-members, amovingdpart carried with one" ,1a. .A emanadas-rigginghavi'ng wedg:

of said members anda Wedges, adaptedto be engaged by a'fo lower .in saiddra'ft-riggmg andto actuate said movlable part, and a transversely-inclined surface adapted tomaintain `the' frictional contact of' the'bwdges by gravity; substantially as def. .-scr1e. f

14: Africtions'draferiging-havingjwedg;

the limit fof motion vof the draftrigging;, sub

' stantiallyasdescribed.;

15. vIn a mechanism of thecharacter .indicated; a friction member, .a spring-seat hav- .ing frictional engagement .with one side of a' movablejpiece aptedto be engaged 4.ator -near the limit of motion' and toca'u'se 'I the reverse motionand release ofthe Wedges,

' g'loosely throu h the ever-carried with :said frictionv member, a follower having 'fricanlsm' 1s subjected to' strain saidv spring-seat v4and follower. act upon each other' tocause v`t1onalf engagement with the; opposite side i" thereof,g-a'nd means whereby When'the mechthem to fri'ctionally engagesaid friction member, s ubstantiallyas described..

16.- In a mechanism of, thecharacter i'ndi-v cated, a'frictionmember, a spring-seat having. frictional engagement. Wlth one side of said'frictionmember, and a follower having lower tofrictionally engage said friction 4member: when the mechanism 'is subjected to gstrain,l substantially asdescribed.

.17. Iny a-f'rictional draft-rigging, thecombinationwithone o r more friction members, of v.i'vedges having. longitudinali faces for contact withv vsaidFfrict'io'n' vmember or members, saidk wedges'also 'havin y'eoactin inclined faces operatin kunder dra andb ng movements of thegr pension' .fof the' wedges ainst the. friction member or members;

having fnctionfaces extending longitudinally n member or members -Wedges having faces parallel with their lines of movement and j contactwith the friction member or members, said wedges al'sojhaving coacting inclined faces, a s ring bearing against .one of the Wedges, andp meansfor restraining the lateral movement ofthe Wedges 5' I substantially as described. 1 9. In a frictional draft'-rigging,`the com# f bination with a frictionrn'ember or r`nem-bers, having friction-faces extending longitudinally ofthe rigging, of '.Wedges contacting with the friction member or members, fand havingco= f acting inclined .facesgextending across the line of draft and arranged to expand the lIco Wedges upon llon 'tudin-almovement;'sub' stantiallyas descnbed.

In testimony..Wh setour. hands.-

i A fHARRYT. KRAKAU. LENDELL. A. CONNER, yWitnesses: I.' f I A D. CALL,

eireof We have hereunto 1-Innerv F. Porn( 

